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From Web to 1 Million Devices: Building a Scalable Mobile AI SDK with Kotlin Multiplatform

  • Client: AI Models Provider
  • Industry: Artificial Intelligence & Machine Learning
  • Services: Fixed-Price Project (Mobile SDK Development)

Executive Summary

An AI model provider needed to transition from a web platform to an embeddable, on-device mobile SDK to unlock a B2B2C growth channel. Skalable delivered a robust, two-layered Kotlin Multiplatform SDK that rolled out to over one million devices, secured significant grant funding, and established a core strategic growth channel.

Key Results

  • 1M+ Devices WorldwideDeployed the SDKs globally, proving reliability and partner readiness at scale.
  • £100k+ Grant SecuredUnlocked a six-figure UK innovation grant by demonstrating technical viability.
  • Integration Time Cut from Weeks to DaysClean API and clear docs enabled rapid adoption.
  • New Strategic Growth ChannelSDKs became a primary driver of B2B2C expansion.

The Challenge

The client needed a lean MVP that would also become the foundation for future growth, balancing performance, accuracy, and developer experience.

  • Expand into B2B2CFlexible white-label and deep integrations from one codebase.
  • Balance Model Accuracy with On-Device ConstraintsLow-latency offline inference with acceptable accuracy.
  • Remove Friction from SDK AdoptionIntuitive APIs, clear docs, minimal setup.
  • Avoid ReworkArchitecture to accommodate analytics, theming, and future modules.

The Solution

  1. 1
    SDK Architecture Definition (2 Weeks)Two-layered KMP architecture separating UI and business logic.
  2. 2
    ML Integration & On-Device Optimisation (3 Weeks)TFLite (Android) and CoreML (iOS) for visual validation.
  3. 3
    Developer Experience & Integration Simplicity (3 Weeks)Clean SDK interface, sample apps, configuration injection.
  4. 4
    Documentation & SDK Delivery (3 Weeks)End-to-end documentation, usage guides, configuration references.
  5. 5
    Final Validation, Analytics & Handover (2 Weeks)Performance analytics and model improvement pipeline.

The Outcome

The mobile SDKs became a core driver of B2B2C expansion. Technical viability secured a six-figure UK grant. Over 1M devices rolled out globally with reliable performance. Clean structure and documentation cut partner integration time from weeks to days.